Advanced Control Flow

Simulations

In actual applications you want to generate random numbers in different ranges, say between a and b.
For example, to simulate a die roll, you need numbers between a =1 and b = 6.
First compute rand() % (b - a + 1) to obtain a random value between 0 and b - a.

Add that to a to yield a random value between a and b.

int rand_int(int a, int b)
{
   return a + rand() % (b - a + 1);

}